Add and impl resend button. Update UI when failing to send messages.

src/controllers/molecules/MessageComposer.js

@@ -232,6 +232,10 @@ module.exports = {
             dis.dispatch({
                 action: 'message_sent'
             });
+        }, function() {
+            dis.dispatch({
+                action: 'message_send_failed'
+            });
         });
         this.refs.textarea.getDOMNode().value = '';
         ev.preventDefault();

src/controllers/molecules/MessageTile.js

@@ -23,6 +23,28 @@ module.exports = {
         var actions = MatrixClientPeg.get().getPushActionsForEvent(this.props.mxEvent);
         if (!actions || !actions.tweaks) { return false; }
         return actions.tweaks.highlight;
+    },
+
+    getInitialState: function() {
+        return {
+            resending: false
+        };
+    },
+
+    onResend: function() {
+        var self = this;
+        self.setState({
+            resending: true
+        });
+        MatrixClientPeg.get().resendEvent(
+            this.props.mxEvent, MatrixClientPeg.get().getRoom(
+                this.props.mxEvent.getRoomId()
+            )
+        ).finally(function() {
+            self.setState({
+                resending: false
+            });
+        })
     }
 };
 

src/controllers/organisms/RoomView.js

@@ -79,10 +79,12 @@ module.exports = {
 
     onAction: function(payload) {
         switch (payload.action) {
+            case 'message_send_failed':
             case 'message_sent':
                 this.setState({
                     room: MatrixClientPeg.get().getRoom(this.props.roomId)
                 });
+                this.forceUpdate();
                 break;
             case'notifier_enabled':
                 this.forceUpdate();